The process took 1 day. I interviewed at Quest Global (New Delhi) in Jan 2012
Interview
I can't remember the details well. But the interviewer is nice.
It's group interview. First I introduced myself in English, then he asked me what I'm interested in and some programming questions.
It was consisting of 3 rounds : Techincal , Group discussion and HR. Overall majority of technical round questions were of basics of Mechanical engineering mainly from Strength of Materils, basics of thermodynamics.